Electromagnetism MOC

A compact map for electric charge, potential, current, and beginner electronics. Start with the physical quantities, then use the electronics notes for circuit habits and examples.

Core quantities

• Charge — what is conserved and what moves.
• Current — rate of charge flow.
• Electric potential — energy per unit charge at a point.
• Voltage — potential difference between two points.
• Resistance — current-limiting relation for ohmic components.
• Lorentz force — force law for charges moving through electric and magnetic fields.

Electronics folder

• Electronics index
• Electronics Key concepts
• Electronics Equations and definitions
• Electronics Examples
• Electronics Common pitfalls
• Electronics Questions to answer

Related solar-physics notes

• Solenoidal magnetic fields and no magnetic monopoles
• Residuals in NF2 and PINNs

Study path

1. Learn the meaning of Charge, Voltage, and Current separately.
2. Use Resistance and Ohm’s law to solve single-loop circuits.
3. Add fields and motion with Lorentz force when mechanics and electromagnetism meet.
4. Check intuition with Electronics Examples.
5. Use Electronics Common pitfalls when answers have the right algebra but wrong sign, unit, or direction.

Source trail for the force-law bridge: Susskind The Theoretical Minimum index and Classical Mechanics: The Theoretical Minimum.